Measurement E151M2126

Experiment:	EG4
Year:	2016	Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_LL
ε_L:	0.1505
Q²:	0.205 GeV²
W:	1625.0 GeV
E_beam:	2.2596 GeV
ε:	0.8051

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	114.0	-1.1734	0.8569	0.082
0.75	210.0	-2.1443	0.8258	0.1427
0.85	210.0	0.071	1.0279	0.0304
0.85	246.0	0.2384	1.0027	0.0338

CLAS Physics Database